dates,lower16,median,upper84
1-Jan-67,0.929756076,1.603649075,2.259845986
1-Apr-67,0.861825692,1.561110114,2.20716641
1-Jul-67,0.822524717,1.58227692,2.348827948
1-Oct-67,0.764949421,1.587444533,2.435427908
1-Jan-68,0.728193444,1.625145218,2.574682823
1-Apr-68,0.71763148,1.644901673,2.648747658
1-Jul-68,0.734518922,1.586450181,2.473718938
1-Oct-68,0.721067918,1.581632217,2.473614117
1-Jan-69,0.776608881,1.645340413,2.58354382
1-Apr-69,0.74845228,1.712491024,2.808051559
1-Jul-69,0.783122715,1.700827992,2.740387288
1-Oct-69,0.773634629,1.655724666,2.619784911
1-Jan-70,0.79856765,1.64028051,2.554999915
1-Apr-70,0.782751663,1.608543135,2.485139062
1-Jul-70,0.761914944,1.578160577,2.425845481
1-Oct-70,0.569112825,1.491522257,2.406771493
1-Jan-71,0.597773583,1.489925705,2.3653388
1-Apr-71,0.670186478,1.549864459,2.460957353
1-Jul-71,0.768752418,1.600136482,2.460339437
1-Oct-71,0.863257163,1.555228449,2.211270391
1-Jan-72,0.78761951,1.538975787,2.262538916
1-Apr-72,0.8874252,1.642928045,2.444056081
1-Jul-72,0.883819573,1.629459097,2.406798039
1-Oct-72,0.924134539,1.652185682,2.423029481
1-Jan-73,0.903787748,1.707003503,2.60559234
1-Apr-73,0.617124075,1.675343544,2.859262147
1-Jul-73,0.472790986,1.703700134,3.135470642
1-Oct-73,0.547584133,1.616235375,2.776132343
1-Jan-74,0.339867701,1.500875028,2.723686136
1-Apr-74,-0.179010701,1.490477645,3.382026397
1-Jul-74,-0.464137808,1.408707025,3.520744088
1-Oct-74,-0.251223774,1.305542376,2.869239124
1-Jan-75,-0.081196762,1.299750872,2.482411418
1-Apr-75,0.234985368,1.382254163,2.43744451
1-Jul-75,0.400742299,1.492196808,2.652591701
1-Oct-75,0.366641305,1.475002136,2.634878722
1-Jan-76,0.422964046,1.497905236,2.630254423
1-Apr-76,0.584869853,1.544023189,2.551053982
1-Jul-76,0.458827916,1.502325608,2.587898114
1-Oct-76,0.405153667,1.484828962,2.592095942
1-Jan-77,0.369481642,1.492618885,2.668387209
1-Apr-77,0.468814102,1.545242943,2.737130155
1-Jul-77,0.472287433,1.560157335,2.760923584
1-Oct-77,0.568134579,1.592233592,2.713251856
1-Jan-78,0.581737735,1.599508643,2.713472571
1-Apr-78,0.591402133,1.687450723,3.00024973
1-Jul-78,0.602779808,1.692334147,2.974310215
1-Oct-78,0.632093691,1.779378039,3.200514078
1-Jan-79,0.820946787,1.764800147,2.895220619
1-Apr-79,0.597915073,1.741507232,3.121256656
1-Jul-79,0.706153707,1.835149995,3.25974611
1-Oct-79,0.730822256,1.980198529,3.705277652
1-Jan-80,0.667174585,2.007393176,3.838132087
1-Apr-80,0.612052965,1.735673161,2.990505755
1-Jul-80,0.60775674,1.717794472,2.888334177
1-Oct-80,0.895439192,2.325074874,4.554487174
1-Jan-81,1.046229595,2.199433525,3.890769966
1-Apr-81,1.196009455,2.260754003,3.889432245
1-Jul-81,1.275827031,2.244649915,3.713526804
1-Oct-81,1.076829449,1.896149969,2.79509156
1-Jan-82,1.350435503,2.193150374,3.39438827
1-Apr-82,1.441220484,2.251982439,3.465419857
1-Jul-82,1.175064992,1.908948869,2.69335427
1-Oct-82,1.252598526,1.970098535,2.768791992
1-Jan-83,1.369876548,2.065029259,2.9030503
1-Apr-83,1.497659575,2.113413199,2.892547561
1-Jul-83,1.509929006,2.248481614,3.243479351
1-Oct-83,1.558067003,2.214307265,3.095847132
1-Jan-84,1.585165729,2.252172242,3.167322513
1-Apr-84,1.628846732,2.377707526,3.479050075
1-Jul-84,1.620701755,2.321696409,3.34223473
1-Oct-84,1.469376126,2.03547867,2.710280365
1-Jan-85,1.476337403,2.104974881,2.874720882
1-Apr-85,1.489407726,2.083623962,2.795102862
1-Jul-85,1.555674897,2.173488131,2.95268811
1-Oct-85,1.54514684,2.131551796,2.856224409
1-Jan-86,1.488577,2.079458737,2.769353826
1-Apr-86,1.452346849,2.012150656,2.635267662
1-Jul-86,1.39351069,1.942219329,2.518503636
1-Oct-86,1.488770062,2.055433152,2.700250557
1-Jan-87,1.452556085,2.001618551,2.607567356
1-Apr-87,1.572542746,2.169434032,2.916295862
1-Jul-87,1.530980198,2.117345608,2.817014318
1-Oct-87,1.545877424,2.140526196,2.853406619
1-Jan-88,1.475007235,2.056068505,2.710691392
1-Apr-88,1.547151002,2.1672695,2.925667464
1-Jul-88,1.612060086,2.25651961,3.096579425
1-Oct-88,1.622035512,2.255232811,3.07863307
1-Jan-89,1.688665332,2.359957409,3.282400003
1-Apr-89,1.641027206,2.263478631,3.079126163
1-Jul-89,1.567717965,2.14042386,2.842661336
1-Oct-89,1.549991421,2.125644283,2.822056914
1-Jan-90,1.578921762,2.187981587,2.952135579
1-Apr-90,1.580911978,2.204306178,2.984901258
1-Jul-90,1.531506061,2.126703055,2.845228997
1-Oct-90,1.393199231,1.960731046,2.567878632
1-Jan-91,1.206244588,1.799204505,2.358702892
1-Apr-91,1.385142454,1.941993083,2.516797009
1-Jul-91,1.424981277,1.991021536,2.590444191
1-Oct-91,1.26579656,1.840020613,2.399429992
1-Jan-92,1.211626026,1.79036706,2.342752022
1-Apr-92,1.278544158,1.845246077,2.398881202
1-Jul-92,1.138085291,1.725307792,2.275542381
1-Oct-92,1.221127848,1.800213857,2.363057076
1-Jan-93,1.185679498,1.779238376,2.348280349
1-Apr-93,1.195698606,1.795855456,2.372930452
1-Jul-93,1.186418107,1.778471626,2.34558891
1-Oct-93,1.178388004,1.767820681,2.329887212
1-Jan-94,1.281803127,1.857317271,2.432368371
1-Apr-94,1.507281261,2.099525515,2.753486264
1-Jul-94,1.514475965,2.124614626,2.803929479
1-Oct-94,1.579490677,2.216229194,2.949943365
1-Jan-95,1.579157412,2.235791445,2.993148413
1-Apr-95,1.520491175,2.166582384,2.90404256
1-Jul-95,1.502428694,2.15172423,2.886103798
1-Oct-95,1.490635663,2.147442013,2.878547752
1-Jan-96,1.378448434,2.02718127,2.71834128
1-Apr-96,1.503896039,2.167472029,2.912662741
1-Jul-96,1.528348962,2.204784424,2.976486364
1-Oct-96,1.504536887,2.181362218,2.950115653
1-Jan-97,1.459344021,2.139647353,2.8995611
1-Apr-97,1.585609673,2.300206683,3.136694303
1-Jul-97,1.486832799,2.208120452,3.019818521
1-Oct-97,1.435569886,2.157631099,2.958739995
1-Jan-98,1.503061514,2.253694228,3.107705864
1-Apr-98,1.467143919,2.210681514,3.054233357
1-Jul-98,1.564195402,2.331993395,3.2398128
1-Oct-98,1.307676305,2.010855457,2.768673248
1-Jan-99,1.344191754,2.056552286,2.836046231
1-Apr-99,1.366879012,2.076383287,2.858460519
1-Jul-99,1.521141213,2.26616561,3.13500749
1-Oct-99,1.577886608,2.331525668,3.230850816
1-Jan-00,1.545251763,2.290235966,3.188946335
1-Apr-00,1.658317525,2.477311023,3.484393964
1-Jul-00,1.53396464,2.302463066,3.224997457
1-Oct-00,1.493538913,2.249219167,3.143832762
1-Jan-01,1.204380903,1.88796121,2.613565596
1-Apr-01,0.976709612,1.639033893,2.29081167
1-Jul-01,0.724366529,1.417015105,2.052695901
1-Oct-01,0.453364508,1.20108285,1.849002415
1-Jan-02,0.749177053,1.425403056,2.045952421
1-Apr-02,0.961741802,1.616410919,2.254996489
1-Jul-02,0.843678927,1.5145863,2.15617337
1-Oct-02,0.544029556,1.256179834,1.899015008
1-Jan-03,0.638835231,1.327457152,1.963406858
1-Apr-03,0.707080327,1.378642646,2.009475202
1-Jul-03,0.826798629,1.48014373,2.110944884
1-Oct-03,0.850295432,1.500244181,2.133830435
1-Jan-04,0.705625182,1.393365775,2.038762192
1-Apr-04,0.666310091,1.366755689,2.024681233
1-Jul-04,0.858670796,1.510870651,2.15530848
1-Oct-04,1.014406278,1.668233923,2.340840955
1-Jan-05,1.117456434,1.808406682,2.533808293
1-Apr-05,1.122911954,1.801309517,2.526980816
1-Jul-05,1.211518811,1.899259379,2.658420655
1-Oct-05,1.225375662,1.939332515,2.734676966
1-Jan-06,1.402810362,2.161882727,3.049941529
1-Apr-06,1.415838477,2.22542769,3.182136133
1-Jul-06,1.327557192,2.108757359,3.022086582
1-Oct-06,1.22681363,1.975341536,2.819024735
1-Jan-07,1.291194755,2.082189638,2.992263979
1-Apr-07,1.269008128,2.053961316,2.953921526
1-Jul-07,1.282091654,2.081922743,2.998199806
1-Oct-07,1.048416075,1.817237799,2.647569604
1-Jan-08,0.284047097,1.087589599,1.808543064
1-Apr-08,0.275808866,1.071957535,1.782435997
1-Jul-08,0.294183706,1.103024687,1.838789704
1-Oct-08,-1.188292108,0.043477381,0.977556579
1-Jan-09,-0.452027947,0.56322379,1.380502784
1-Apr-09,0.110162772,0.952226077,1.700927246
1-Jul-09,0.25935262,1.056412891,1.790302977
1-Oct-09,0.463617219,1.258603248,2.02695508
1-Jan-10,-0.037064474,0.826768848,1.572370133
1-Apr-10,-0.094131212,0.769405403,1.516701359
1-Jul-10,-0.00200269,0.84010363,1.585764102
1-Oct-10,-0.032901113,0.824638747,1.581529993
1-Jan-11,0.065028896,0.918314939,1.692906992
1-Apr-11,0.044132192,0.92922866,1.722403432
1-Jul-11,-0.167724218,0.751437298,1.548435966
1-Oct-11,-0.157638901,0.731984478,1.506488243
1-Jan-12,-0.110004349,0.815136604,1.63064364
1-Apr-12,-0.142194322,0.767497969,1.567528087
1-Jul-12,-0.191623076,0.701728373,1.491546112
1-Oct-12,-0.194259339,0.712919707,1.511984614
1-Jan-13,-0.05815529,0.806748675,1.580434904
1-Apr-13,0.011798806,0.841240562,1.605602105
1-Jul-13,0.034662331,0.864702113,1.625052362
1-Oct-13,0.016024748,0.857112055,1.621025147
1-Jan-14,-0.153871838,0.713877932,1.483570117
1-Apr-14,0.15390307,0.96005542,1.712347013
1-Jul-14,0.109770765,0.915849613,1.659476772
1-Oct-14,-0.001203004,0.815597743,1.556709839
1-Jan-15,0.071295157,0.868119602,1.603071028
1-Apr-15,0.042469596,0.862024784,1.610098076
1-Jul-15,0.094831843,0.902585278,1.651817473
1-Oct-15,0.003159781,0.823546802,1.568780096
1-Jan-16,0.212859151,0.995372042,1.738268475
1-Apr-16,0.048841517,0.8807901,1.640965732
1-Jul-16,0.271180809,1.043364131,1.780322573
1-Oct-16,0.180614116,0.94983677,1.668800249
1-Jan-17,0.290847498,1.046792078,1.769519685
1-Apr-17,0.467295429,1.182082203,1.890724906
1-Jul-17,0.633484014,1.324411471,2.037608494
1-Oct-17,0.673885438,1.362211531,2.071746998
1-Jan-18,0.744956589,1.466749478,2.220123435
1-Apr-18,0.802671073,1.522620297,2.283020982
1-Jul-18,0.695899364,1.391108609,2.100209537
1-Oct-18,0.71722672,1.418887856,2.135317541
1-Jan-19,0.844404768,1.537780267,2.267374574
1-Apr-19,0.937223874,1.627489436,2.36605786
1-Jul-19,0.879922002,1.566521078,2.275733489
1-Oct-19,0.495520152,1.224954986,1.898537827
1-Jan-20,0.237021846,1.043372375,1.748327319
1-Apr-20,-1.815537115,-0.153535158,0.995990819
1-Jul-20,1.293264639,2.014548852,2.860390609
1-Oct-20,0.717213446,1.460234446,2.176656704
1-Jan-21,0.614902073,1.383129274,2.107130472
1-Apr-21,0.610452819,1.561105793,2.511760798
1-Jul-21,-0.001817262,1.140115019,2.068422211
1-Oct-21,0.293750635,1.367195871,2.302697416
1-Jan-22,-0.280687063,1.059950268,2.099468283
1-Apr-22,0.108558824,1.266321221,2.219949201
1-Jul-22,0.954836549,1.883324851,2.944389031
1-Oct-22,1.209936132,2.069393052,3.151153527
1-Jan-23,1.255318185,2.091342084,3.152180535
1-Apr-23,1.341428973,2.131933943,3.146454409
1-Jul-23,1.329453108,2.046421455,2.894059577
1-Oct-23,1.345480405,2.06004289,2.896164355
1-Jan-24,1.376501488,2.138634234,3.095794925
1-Apr-24,1.450000463,2.226483918,3.237485903
1-Jul-24,1.391588798,2.140400512,3.059699992
1-Oct-24,1.095981063,1.799336096,2.542594264
1-Jan-25,1.022296542,1.758210601,2.522059159